Blood in the stool all the time but not painful to consider may be related to hemorrhoids, ulcerative colitis, rectal polyps and so on. 1. Hemorrhoids: most common in internal hemorrhoids, showing painless blood in the stool, etc., visible bright red blood, can be jet-like bleeding. 2. Ulcerative colitis: an autoimmune disease, related to genetics, intestinal microorganisms and the immune system, usually a recurring chronic course, often showing pus and blood stools, mucus blood stools or blood stools, etc., there may be blood in the stools all the time, but the situation does not hurt. 3. Rectal polyps: due to chronic inflammation of the rectal mucosa under the stimulation, resulting in the surface of the rectal mucosa, resulting in elevated lesions, showing painless blood in the stool, polyp prolapse and other symptoms. In addition, rectal cancer, anal fistula, coagulation dysfunction disease, rectal trauma and other conditions may lead to painless blood in stool symptoms. Therefore, you should consult the doctor in time, complete the examination, make a clear diagnosis and then follow the doctor’s instructions for treatment.